Improvement in vulcanizing apparatus for dental purposes



UNITED STATES PATENT, iorrron.

JOHN RANSOM, QFTOLEDO, OHIO.

IMPROVEME-NT m vincimzme APPARATUS For orr rliirurrosrsf Specification forming part of Letters Patent No- 154,082, dated August 11, 1874; application'filed J uue 25, 1874.

To all whom it may concern: disk, I, as shown in Fig. 1. On one side of Be it known that I, J OHNR. B. RANsoM, of the packing-tube D in the lid G is arranged a Toledo, in the countyof Lucas and in the State thermometer, J, in any suitable manner. On of Ohio, have invented certain new and usethe opposite side is a whistle-tube, K, with ful Improvements in Vulcanizing Apparatus whistle L. In the lower end of the tube K is p for Dental Purposes; and do hereby declare placed a valve, 1), provided with downwardthat the following is a full, clear, and exact projecting Wings, as shown in Figs. 1 and 3,

description thereof, reference being bad to the and in the under surface of the valve is a ciraccompanying drawings, and to the letters of cular groove or recess, .27, to fit over the seat reference marked thereon, making a part of d, formed in the lower end of the tube. From.

this specification. the valve 12 projects a stemf'e, which is sur- The nature of my invention consists in the rounded by a spiral spring, f, to hold the construction and arrangement of a vulcanizing valve down. The wing-valve b, as constructed, apparatus for dental and other purposes, as presents a broad surface to the action of the will be hereinafter more fully set forth. steam, and hence is not, liable to be stopped;

In order to enable others skilled in the art but as soon as the pressure exceeds the to which my invention appertains to make and amount at which the valve is set it will open use the same, I will now proceed to describe and give the alarm by sounding the whistle. its construction and operation, referring to The vulcanizer or boiler A is formed, as

the annexed drawing, in which shown, with a slightly upward-curved bot- Figure 1 is a longitudinal vertical section tom, and above the same in the vulcanizer is of niyvulcanizing apparatus. Fig. 2 is a pera perforated diaphragm or false bottom, M. spective view of a loose perforated bottom or This diaphragm maybe in the form of an indiaphragm used in the vulcanizer. Figs. 3 verted cup and placed on the bottom of the and 4 are detached views of certain parts vulcanizer, or be permanently attached there-' thereof. to at a suitable height above the bottom. On A represents the vulcanizer or boiler, conthe diaphragm M is placed a perforated plate,

, structed of ordinary form and size, and of any N, provided on its upper surface with lugs ii,

suitable material. This vulcanizer is placed to hold the flask O in place thereon. P P within a stove or furnace, B, as shown. C is are bails or handles attached to the plate N, the lid of the vulcanizer, which lid is provided by which said plate is easily inserted in the with a downward-projecting circumferential .boiler or taken out therefrom.

rim, and is screwed on the vulcanizer, as Water is to beput in the boiler or vulcanshown, so as to form a steam-tight joint. In izer below the diaphragm M, and one or more the rim of the lid 0 are made a number'of flasks, .O, placed on the plate N, and the notches, a a, for the insertion of a key or whole depositedon the diaphragm. Thehoiler wrench to turn the lid, and in a rim around being placed in the stove or furnace B and the upper end of the vulcanizer are similar. the lid 0 screwed down tight, as steam is notches a a, for the attachment or insertion generated it passes up through the perforaof another key or wrench to hold the boiler tions in the diaphragm and plate, and comwhile the lid is being screwed on. By these pletely envelops the flasks. At the proper means a perfectly steam-tight joint may be time in. the process of vulcanizing, the flask.

obtained. The lid 0 is, in the center, proor flasks are closed tightly by means of the vided with a vertical packing-tube, D, in the screw Gr.

lower end of which is formed a female screw Having thus fully described my invention,

for the passage of the screw G. Surrounding what I claim as new, and desire to secure by this screw, and on the upper end of the pack- Letters Patent, is-

' ing-tube, is screwed a cap or stuffing-box, E, 1. The perforated plate N, provided with as shown in Fig. 1. The upper end of the lugs i i and bails or handlesPP, substantially screw G is provided with a handle, H, and as and for the purposes herein set forth.

the lower end is provided with a swiveled' 2. The combination of the boiler A, lid 0,

perforated diaphragm M, perforated plate N, In testimony that I claim the foregoing I with handles P P, and-the screw G, with have hereunto set my handthisflthflai of swiveled disk I, all substantially as and. for May, 1814.

the purposes herein set forth.

3. The combination of the boiler 9r qulcan: JOHN R. B. RANSOM. izer A, lid G, Whistle-tube K, with whistle L,

the wing-valve b, with circular grooye w, and -Witnesses:

seat d, all constructed substantially as and" W. T. JOHNSON,

for the purposes herein set forth. I C. L. EV'ERT. 

